The molecular weight of Barium aluminate [BaAl₂O₄] is 255.2876768.

Barium aluminate [BaAl₂O₄] (CAS Registry Number: 12004-04-5) is an inorganic compound of three elements: Barium (Ba), Aluminium (Al), and Oxygen (O). The molecular weight of Barium aluminate [BaAl₂O₄] is 255.2876768 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

CALCULATION PROCEDURE: Barium Aluminate [BaAl₂O₄] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Barium aluminate molecule.
From the chemical formula, you will know different atoms and their number in a Barium aluminate molecule. The chemical formula of Barium aluminate is BaAl₂O₄. From the chemical formula, you can find that one molecule of Barium aluminate consists of one Barium (Ba) atom, two Aluminium (Al) atoms, and four Oxygen (O) atoms.

Step 2: Find out the atomic weights of each atom (from the periodic table).

Atomic weight of Barium (Ba): 137.327 (Ref: PubChem-56, Ciaaw-barium)
Atomic weight of Aluminium (Al): 26.9815384 (Ref: ciaaw-aluminium)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)

Step 3: Calculate the molecular weight of Barium aluminate by adding the total weight of all atoms.

Number of Barium (Ba) atoms in Barium aluminate: 1
Atomic weight of Barium: 137.327
Total weight of Barium atoms in Barium aluminate: 137.327 x 1 = 137.327

Number of Aluminium atoms in Barium aluminate: 2
Atomic weight of Aluminium: 26.9815384
Total weight of Aluminium atoms in Barium aluminate: 26.9815384 x 2 = 53.9630768

Number of Oxygen (O) atoms in Barium aluminate: 4
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Barium aluminate: 15.9994 x 4 = 63.9976

Step 4: Calculate the molecular weight of Barium aluminate by adding up the total weight of all atoms.

Molecular weight of Barium aluminate: 137.327 (Barium) + 53.9630768 (Aluminium) + 63.9976 (Oxygen) = 255.2876768

So the molecular weight of Barium aluminate is 255.2876768.

Barium aluminate [BaAl₂O₄] Molecular Weight Calculation

REFERENCES:

• Ciaaw-aluminium: https://www.ciaaw.org/aluminium.htm
  
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Jlab-ele057: https://education.jlab.org/itselemental/ele057.html
• PubChem-56: https://pubchem.ncbi.nlm.nih.gov/element/56
• Ciaaw-barium: https://www.ciaaw.org/barium.htm

FURTHER READING

• Barium aluminate from Sigma-Aldrich
• Barium aluminate from Biosynth 
• Barium aluminate from Americanelements
• Barium aluminate from Materion

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